NouVeL/ADVect/Graphics.h

#pragma once

#include <SDL.h>

#include <bgfx/bgfx.h>

#include <Common.h>
#include <Environment.h>

namespace ADVect::Graphics {
	bool Init(u16 width, u16 height);
	void Shutdown();

	enum MarkupStyle {
		TEXT_NONE = 0,
		TEXT_BOLD = 1 << 0,
		TEXT_ITALIC = 1 << 1,
		TEXT_UNDERLINE = 1 << 2,
		TEXT_STRIKETHROUGH = 1 << 3,
		TEXT_OVERLINE = 1 << 4
	};

	struct ImageTexture {
		i32 w, h, channels;
		u8* buffer;
		bgfx::TextureHandle tx;
	};
	ImageTexture* GetImageTextureFromFile(const std::string& file);

	void DrawTexture(const bgfx::TextureHandle& tex, i32 pos_x, i32 pos_y, u32 w, u32 h, u64 state, const bgfx::ProgramHandle& pg);
	void DrawTextureImage(const bgfx::TextureHandle& tex, i32 pos_x, i32 pos_y, u32 w, u32 h);
	void DrawTextureImage(const ImageTexture& img, i32 pos_x, i32 pos_y);
	void DrawTextureImageAlpha(const ImageTexture& img, i32 pos_x, i32 pos_y, f32 alpha);
	void DrawTextureStencilAlpha(const bgfx::TextureHandle& tex, i32 pos_x, i32 pos_y, u32 w, u32 h);
	
	template <bool DoRender = true, bool Walk = true>
	void RenderGlyph(NVL::Char c, std::conditional_t<Walk, i32&, i32> pos_x, std::conditional_t<Walk, i32&, i32> pos_y, u32 col, u32 style_flags);
	template <bool DoRender = true, bool Walk = true>
	void RenderString(const NVL::String& s, std::conditional_t<Walk, i32&, i32> pos_x, std::conditional_t<Walk, i32&, i32> pos_y, u32 col, u32 style_flags);
	template <bool DoRender = true, bool Walk = true>
	void RenderString(NVL::String::const_iterator cbegin, NVL::String::const_iterator cend, std::conditional_t<Walk, i32&, i32> pos_x, std::conditional_t<Walk, i32&, i32> pos_y, u32 col, u32 style_flags);

	i32 RenderSubstringBox(const NVL::String& s, i32& pos_x, i32& pos_y, i32 reset_x, u32 w, u32 col, u32 style_flags = TEXT_NONE, size_t s_end = NVL::String::npos);
	void RenderSubstringMarkupBox(const NVL::Environment::MarkupString& ms, i32 pos_x, i32 pos_y, u32 w, u32 col, size_t end = NVL::String::npos);
}